豫北地区地震活动性及其与区域地壳运动的关系

本根据地震地质和地震分布条带，把豫北地区从西至东分为弱，中，强三个区段。由于区域地壳深部主断裂和大震活动的牵动作用，是造成本地震活动的重要原因，因而从区域地壳块体活动背景上探讨了本区及邻近地区地震活动趋势，中还指出，豫北西部太行山区的林县－薄壁地震带，虽不具有强震构造背景，但小震年月频率多寡和震群活动，却能反映了大区域地壳应力场强弱，亦可作为判断区域性地震活动的指标。

THE SELSMICITY AND THE RELATION BETWEEN IT AND REGIONAL CRUSTAL MOVEMENT IN NORTH HENAN REGION

In this paper, the North Henan region is divided into the three areas, weak, medium and strong from west to east according to seismogeology and seismic belt distribution. In view of influence of deep faults and large seismicity in regional crustal on the seismicity in this region, the seismicity trend in this region and its neighbouring areas is studied on the background of block body activity in regional crustal. And also, this paper points out that the small seismic frequency in month or year and the earthquake swarm activity of the Linxian-Bobi fault in Taihang Mountain area in western part of North Henan scismic zone, although where there is no strong seismic tectonic background, are able to reflect crustal stress state in large region and the index judging regional seismicity.